I like to take a frozen Nalgene bottle of water to my Bikram Yoga class. The problem is, every bottle I have used so far becomes deformed and, as can be seen in the picture below, the bottom bulges ...

I saw an ad today for a pressurized hydration pack. My first thought was "why?". I can't imagine a scenario would this would not lead to (a) more weight, or (b) greater risk of failure... neither of ...

Recently, I've started drinking more and more tap water instead of buying bottles all the time (which is usually absolutely no issue in Germany).
I like to use a bottle for that not fill a glass all ...

We are wandering around Netherlands (on foot, hitch hiking, bicycle). We don't sleep in camping site, we put our tent anywhere "in the bush".
We are use to travel on this way in Southern Europe but ...

I'm going on a one day hike, and I want to cook an egg whilst on it. I'd like to avoid carrying excess water, and the route goes past a couple of waterfalls and several streams, so there is no problem ...

If you're lost in the wilderness (and you've foolishly left behind your handy dandy water purification tablets and water filter), what are some of the best and safest ways to purify water? What do you ...

How can detect, in the outdoors with minimal equipment, if I am dehydrated or need electrolytes?
Update
Some background:
I get overheated very easily, possibly because I don't sweat as much as most ...

Saw a video on youtube where some guy made a water filter out of a bottle, charcoal, sand and little rocks. He commented that since the charcoal is very porous it's great for filtering. Then, after ...

With fracking, chemical spills, and all sorts of environmental nonsense on the rise, water quality can be compromised in some areas. How can I tell when it's not safe to consume even after filtering ...

I was just reading this question What is the safest way to purify water?
Now I walk a lot in Snowdonia in North Wales and on occasion I drink from mountain streams. I've even camped next to mountain ...

There are a few questions regarding safety of water purification, one regarding expiration date, another regarding iodine, but I know that there are more than one types of water purficiation tablets.
...

Many mountain hikers recommend drinking hot fluids, because they provide a lot of energy. According to the discussion "Does eating snow help dehydration?", the actual calorie gain is minimal, however ...

For an incoming trip, I am considering buying a camelback hydration system. There are two options available at my local preferred dealer, and I would like some advice on which one to choose. The main ...

We used a Katadyn Vario filter during our last hike in Scotland. It uses a ceramic filter when used in LONGER LIFE modus.
The waters in Scotland however have a tendency to be brown (due to the peat ...

Is there any way I can balance out drinking water when taking a trek, or simply taking a hike to one of the local peaks around here? Even if I come stocked, I tend to end up run out of water close to ...

I've read one one of the US national forest or wilderness websites that when camping in the wild, one should camp at a certain distance from a water source. Should I understand a water source to mean ...

I have two old hydration bladders, both of which are no longer usable (in one the cap is broken, in the other the internal bag is ripped). Spare parts appear to be unavailable. Is there anything good ...

So I read this answer and I was wondering what contraption produce the most water when you don't have a water source? So what water trap produces the most water? Specifically, what should I do with my ...

In the past, I have gone backpacking with some fairly expensive, heavy water purification tools. But the more I read about water safety in California's Sierras (here and here), the less I think these ...

When choosing a water bottle for hiking, a very distinct choice I can make (amongst all the other types of materials and hardiness, size and so on) is weighing up whether to purchase a "hard" plastic ...

We have couple Coleman 5 gal. water carriers. They are nice sturdy canisters, but they have major weak spot: their taps are of poor quality and easily broken — both ours are, and seems like a lot of ...

For years I used a product called Polar Pure for water purification when weekend backpacking. It was an iodine based solution, so not great for a thru-hike, but fine for a week or less. Specifically, ...

Is there a formula which can be used (I'm thinking one that gives amount of water needed factoring in time or distance covered and temperature) to roughly work out the amount of water that needs to be ...

I'm using a multi fuel stove (MSR Dragonfly) for a 10 day ski tour, how much fuel should I allow to provide sufficient water for cooking and drinking. Meals will be mostly dehydrated just-add-water ...

When doing outdoor sports like hiking or biking I'll always take a lot of cold water with me. I love to drink cold water and I feel more refreshed compared to drinking warm or not-so-cold water. But ...

When backpacking in freezing weather, water in a canteen often turns to ice. I am looking for a canteen that
Will not burst when the volume of water increases due to freezing
Will make it possible, ...

When using a CamelBak (or other hydration bladder system), it is easy for mold to grow if the bladder is left sitting with water in it. What is the best way to avoid mold (or other nasties) growing ...